* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #121212;
  color: #fff;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  background-color: #1f1f1f;
  padding: 5px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #333;
}

header h1 {
  font-size: 20px;
}

.menu-toggle {
  font-size: 24px;
  cursor: pointer;
  display: none;
}

.container {
  display: flex;
  flex: 1;
}

aside {
  width: 250px;
  background-color: #1f1f1f;
  padding: 20px;
  border-right: 1px solid #333;
}

aside nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

aside nav a {
  background-color: #2c2c2c;
  color: #fff;
  padding: 12px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.3s;
}

aside nav a:hover {
  background-color: #444;
}

.submenu-title {
  background-color: #2c2c2c;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
}

.submenu {
  display: none;
  flex-direction: column;
  gap: 10px;
  margin-left: 10px;
  margin-top: 5px;
}

.submenu.open {
  display: flex;
}

main {
  flex: 1;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 400px; /* garante altura mínima */
}

/* Container da imagem principal */
.main-image-container {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  padding: 5px 0; /* espaço superior/inferior */
}

.main-image-container img {
  max-width: 100%;    /* largura máxima da imagem */
  max-height: 80%; /* altura máxima da imagem */
 /* object-fit: contain; /* mantém proporção */
  display: block;
  margin: 0 auto;
}

footer {
  background-color: #1f1f1f;
  padding: 10px;
  text-align: center;
  border-top: 1px solid #333;
}

footer .contact-icons {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 10px;
}

footer .contact-icons img {
  width: 30px;
  height: 30px;
  filter: invert(1);
}

footer p {
  color: #aaa;
  font-size: 14px;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Responsivo */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }

  aside {
    display: none;
    width: 100%;
    border-right: none;
    border-bottom: 1px solid #333;
  }

  aside.open {
    display: block;
  }

  .menu-toggle {
    display: block;
  }

  main {
    padding: 10px;
  }
}